Origin for each line in smartd.service from check-in ebafd89015:

b8c8da525b 2019-10-20        arcade: # vim:ft=make:
b8c8da525b 2019-10-20        arcade: 
8f80b79392 2019-10-20        arcade: DAEMON_smartd_COMMAND?=/usr/local/sbin/smartd
b8c8da525b 2019-10-20        arcade: DAEMON_smartd_ENABLE?=no
b8c8da525b 2019-10-20        arcade: DAEMON_smartd_FLAGS?=-c /usr/local/etc/smartd.conf -n
b8c8da525b 2019-10-20        arcade: 
ebafd89015 2019-10-21        arcade: smartd: _service
716b0393df 2019-10-21        arcade: .export DAEMON_$@_ENABLE
716b0393df 2019-10-21        arcade: 	test -z "$${DAEMON_$@_ENABLE}" || \
b4e23b21af 2019-10-20        arcade: 	test -f /usr/local/etc/smartd.conf || { \
47c6cc1171 2019-10-20        arcade: 	  echo smartd requires config file to start. ; \
716b0393df 2019-10-21        arcade: 	  false; \
716b0393df 2019-10-21        arcade: 	}